Telephone-receiver.



Patented Nov. 20, I900.

H. H. HIPWELL.

TELEPHONE RECEIVER.

(Application filed Feb. 10, 1900.)

(No Model.)

Nirnn TATES ,FATENT FFICEQ HARRY H. HIPVVELL, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR TO HIPWELL MANUFACTURING CO., OF SAME PLACE.

TELEPHONE-RECEIVER.

SPECIFICATION forming part of Letters Patent No. 661,988, dated November 20, 1900.

Application filed February 10,1900. Serial No. 4,834. (No model.)

T (Mb whom it may concern.-

Be it known that 1, HARRY H. HIPWELL, a resident of Allegheny, in the county of Allegheny and State of Pennsylvania, have inventedanewandusefulImprovementin Telephone-Receivers; and I do hereby declare the following to be a full, clear, and exact description thereof.

Myinventionrelates to telephone-receivers, and has for one object to provide means whereby the space or distance between the end of the permanent magnet or the pole of such magnet and the diaphragm may be readily and accurately adjusted and when so adjusted be held securely in such position; and a further object of my invention is to provide means by which the permanent magnet and associated parts mounted thereon may be socured and conveniently held removable within the shell of the receiver.

My invention consists, generally stated, in the novel arrangement, construction, and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use the receiver, I will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a longitudinal central section of a telephone-receiver embodying my invention and showing the magnet and connecting parts in elevation. Fig. 2 is a side elevation of the magnet removed from the shell and.

looking at the opposite side of the same from that shown in Fig. 1. Fig. 3 is a plan view of the heel of the receiver. Fig. 4 is a like View of the heel of the magnet. Fig. 5 is a cross-section on the line X X, Fig. 1. Fig. 6 is a like view on the line Y Y, Fig. 1; and Fig. 7 is a longitudinal central section of a portion of the magnet.

Like figures herein indicate like parts in each of the figures of the drawings.

As illustrated in the drawings, 1 represents the shell of the receiver, which has shoulder 1 formed therein and the heel 1 formed at one end thereof- The opposite or flared end 2 is provided with the cap 2, which is secured thereto by the screw-threads 2" in the usual manner and within which and between the shell 1 and cap 2 is held the diaphragm 3.

The permanent magnet 4 of the ordinary or horseshoe construction is located within the shell 1 and is provided with the pole-pieces 5 and coils 6 at one end thereof. Fitting on each side of the magnet 4 are the threaded portions 7, which are connected to and are formed as part of a shank 8, which fits within the magnet 4, and the wholeis secured therein by a screwbolt. 9. A threaded sleeve or collar 10 fits around and engages with the threaded portions 7 and is provided with an enlargement 11, formed thereon, which is adapted to come in contact with a shoulder 1, formed in the shell 1, and the enlargement 11 has a flange 12 thereon, within which are formed a series of openings or seats 13 for operating said sleeve or collar 10.

Fitting around and over the heel end of the magnet 4 is the clamp 14, which is provided with flanges l4 thereon for securing the same to the magnet 4 by means of a screw-bolt 15. Lugs 16, having threaded openings or holes 16 therein, are formed on the clamps 14, within which screws 17 are adapted to engage and pass through openings 17 in the heel 1 of the shell 1. Binding-posts 18, having binding-nuts 18 thereon for holding the wires 18", pass through openings 19 in the heel 1" of the shell and are secured to the clamp 14 by nuts 20, while suitable pieces of insulating material 21 are placed on each side of the clamp 14 between the binding-posts 18 and nuts 20.

The use and operation of my improved telephone-receiver are as follows: The parts of the receiver being assembled as shown in Fig. 1 and it being desired to adj ust the pole-pieces 5 to or from the diaphragm 3 for any cause, all that is necessary for the operator to do is to unscrew the screws 17 from their threaded holes 16 in the lugs 16 on the clamp 14 sulfi ciently to allow movement in either direction of the magnet 4, when the cap 2 can be unscrewed and removed from the screw-th reads 2 on the flared end 2" of the shell 1 and with it the diaphragm 3, so that a nail or other suitable instrument inserted into the openings or seats 13 in the flange 12 of the sleeve or collar 10 to revolve said sleeve or collar 10 on said threaded portions 7 on the magnet 4, so causing the magnet 4 to move back and forth within said collar 10 by reason of the enlargement 11 on said collar 10 fitting against the shoulder l in the shell 1, and thus permitting the pole-pieces 5 on said magnet 4 to be properly set or adjusted with relation to said diaphragm 3. To rearrange or position these parts again, all that is necessary is to tighten up the screws 17 against the heel 1 to draw the sleeve or collar 10 against the shoulder 1 and place the diaphragm 3 against'the pole-pieces 5 on the magnet 4 or within the cap 2, when said cap 2 can be screwed to the flared end 2 on the shell 1 by means of the threads 2 thereon.

Then it is desired to remove the entire magnet 4 from the shell 1,all thatis necessary is for the operator to unscrew and remove the screws 17 from their holes 16 in the lugs 16 on the clamp 14 and unscrew and take off the binding-nuts 18 from the binding-posts 18 to remove the wires 18" therefrom, when the cap 2can be unscrewed and removed from the threads 2" on the flared end 2 of the shell 1, and with it the diaphragm 3, after which the magnet -'1 in its entirety can be drawn from the shell through the flared end,2, the hinding-posts 18 passing through the openings 19 in the heel 1" of said shell. To rearrange or position said magnet 1, all that is necessary is to insert the end of the magnet 4, carrying the binding-posts 18, within the open mouth of the flared end 2 of the shell 1 and then pushing the binding-posts 18 through the openings 19 in the heel 1 of the shell, so that they extend the proper distance beyond said heel 1", when the wires 18" can be inserted into the binding-posts 18 and the bindingnuts 18' screwed down to place on the posts 18. The screws 17 can then be inserted through the openings 17 in the heel 1" and into the holes 16 of the lugs 16 on the clamp 14, when said screws 17 can be screwed down to place against the heel 1'', so bringing the sleeve or collar 10 against the shoulder 1, and after this is accomplished the diaphragm 3 can be placed within the cap 2 or against the pole-pieces 5 on said magnet and said cap 2 screwed onto the flared end 2' of the shell 1 by means of the threads 2" thereon.

It will thus be seen that my improved telephone-receiver is cheap and simple in its construction and operation, and by such a device the adjustment of the poles to and from the diaphragm can be easily and rapidly made, and it will also be seen that the construction permits the quick and-convenient removal of .the magnet in its entirety without the necessity of mounting and connecting the magnet to the heel of the receiver or the employment of a separate and removable heel for such purpose.

Various modifications in the construction and design of the various parts of the receiver may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

1. In a telephone-receiver, the combination of a shell having a shoulder therein, a permanent magnet, a diaphragm, and a sleeve 01'' collar fitting around said magnet adapted to engage with said shoulder for adjusting said magnet to and from said diaphragm.

2. In a telephone-receiver, the combination of a shell having a shoulder therein, a permanent magnet, a diaphragm, and a threaded sleeve or collar fitting around said magnet and adapted to engage with said shoulder for adjusting said magnet to and from said diaphragm.

3. In a telephone-receiver, the combination of a shell having a shoulder therein, a permanent magnet having a threaded portion thereon, a diaphragm, and a threaded sleeve or collar engaging with the threaded portion on said magnet, said sleeve or collar having a flange or enlargement thereon adapted to engage with said shoulder for adjusting said magnet to and from said diaphragm.

4. In a telephonereceiver, the combination of a shell having a shoulder therein, a permanent magnet having a threaded portion thereon, a diaphragm, a threaded sleeve or collar engaging with the threaded portion on said magnet, said sleeve or collar having a flange or enlargement thereon adapted to engage with said shoulder, and means on said sleeve or collar for operating the same to adjust said magnet to and from said diaphragm.

5. In a telephone-receiver, the combination of a shell having a shoulder therein, a permanent magnet having a threaded portion thereon, a diaphragm, a threaded sleeve or collar engaging with the threaded portion on said magnet, said sleeve or collar having a flange or enlargement therein adapted to engage with said shoulder, and openings or slots in said sleeve for the insertion of an instrument to revolve the same and adjust said magnet to and from said diaphragm.

6. In a telephone-receiver, the combination of a shell havinga shoulder therein and a heel formed as part thereof, a permanent magnet, a clamp secured to said magnet, bindingposts on said clamp adapted to pass through openings in the heel of the shell, and means for removably securing said magnet and clamp between the shoulder and heel of said shell.

7. In a telephone-receiver, the combination of a shell having a shoulder therein and a heel' formed as part thereof, a permanent magnet, a clamp secured to said magnet, bindingposts on said clamp adapted to pass through openings in theheel of the shell, and screws passing through openings in the heel of the shell and engaging with said clamp for removably securing said magnet and clamp between the shoulder and heel of the shell.

In testimony whereof I, the said HARRY H. HIPWELL, have hereunto set my hand.

' HARRY H. HIPWELL.

Witnesses:

JAMES L. WEHN, J. N. 000KB 

